What is the Context of Shared Sequencing?

Shared sequencing is a rapidly developing area of research and implementation within the rollup ecosystem, addressing challenges related to censorship resistance and interoperability. The goal is to establish a robust and fair mechanism for transaction ordering across diverse layer-2 networks, thereby fostering a more cohesive and efficient decentralized application environment.

Shared Sequencing

Definition

Shared sequencing involves multiple rollup solutions utilizing a common, decentralized network of sequencers to order and batch their transactions before submission to the base layer. This shared approach aims to improve cross-rollup composability and reduce the centralization risks associated with individual rollup sequencers. It offers a neutral ordering service.

∞Infrastructure

∞Decentralized Execution

∞Intent-Driven Architecture

Avail Nexus Launches Unified Cross-Chain Execution Layer with Intent-Driven Architecture

The Nexus layer abstracts multichain complexity via intent routing, establishing a foundational primitive for seamless, unified dApp execution.

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∞Rollup Architecture

∞Proposer Builder Separation

∞Rollup Decentralization

L1 Proposers Decouple Rollup Sequencing for Maximum Decentralization

The Based Sequencing model shifts rollup transaction ordering to the L1 validator set, fundamentally inheriting L1 security and eliminating sequencer centralization risk.

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∞Preconfirmations

∞Base Layer Alignment

∞Layer-2 Security

Delegating Layer Two Sequencing to Base Layer Proposers Secures Rollups

Based sequencing transfers L2 transaction ordering to the credibly neutral L1 validator set, fundamentally resolving sequencer centralization risk and enabling atomic composability.

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∞Decentralized Ordering

∞Shared Sequencing

∞L1 Validator Set

Based Sequencing Decouples Rollup Liveness from Centralized Sequencers

Based Sequencing cryptographically leverages Layer 1 validators for rollup transaction ordering, resolving L2 centralization risk and ensuring robust liveness.

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∞Mechanism Design

∞Modular Blockchain

∞Liveness Guarantee

Set Byzantine Consensus Decouples Rollup Sequencing from Centralized Control

The research introduces Set Byzantine Consensus to construct a Decentralized Arranger, fundamentally solving rollup centralization by separating transaction content agreement from final ordering.

The detailed perspective showcases a metallic blue, granular-textured mechanism, centralizing on a cylindrical validator node component secured by screws. Interconnected block-like structures suggest a modular architecture crucial for distributed ledger technology DLT. Thin, silver wires traverse the components, symbolizing data transmission pathways within a blockchain network. The robust construction and precise engineering evoke a Layer 2 scaling solution or a dedicated enterprise blockchain infrastructure, highlighting secure protocol governance and efficient interoperability within a complex digital asset ecosystem.

∞HotShot Consensus

∞Fast Finality

∞Shared Sequencing